Chapter 5 Methods of Anomaly Diagnosis |V FD-VJ-
5-10
No. Display Code
Fault
Description
Troubleshooting
Fault codes
defined by
Delta
(2021H
Low Byte)
CANopen
Fault
Register
(1001H
bit 0~7)
DS402
Fault
Codes
(603FH)
the oil inlet, check if that
suction filter is blocked up.
E70
Business hours
end. (tUP)
Send back to manufacturer for repair.
0046H 32 FF29H
E71
Over current at
braking chopper
(ocbs)
1. Check if the braking chopper is short-
circuit?
2. Is the resistance value too small?
3. Send back to manufacturer for repair
0047H 1 FF29H
F72
Braking resistor
is open-circuit
(bro)
Check if the braking resistor is
open-circuit or properly wired?
0048H 32 FF29H
F73
Braking
resistor’s
resistance value
is too small.
(brF)
Check if the resistance value big enough?
0049H 32 FF29H
E74
Braking chopper
overheated
(oH4)
1. Check if there are too many times of
deceleration and pressure releasing
during formation period?
2. Modify formation period
004AH 3 FF29H
E75
Error occurred
on braking
chopper’s
thermo-protectio
n line (tH4o)
Send back to manufacturer for repair.
004BH 3 FF29H
E78
b.GFF
.The ground short
is detected before
running the servo
drive, because all
the upper arms or
all the lower arms
are turned
on.(b.GFF)
Only after this fault occurs for 5 seconds, you
can reset the servo drive.
If this fault is
persistent, send it back to the
manufacturer for repairing.
004Eh 2 0x2240H
E79
A.oc
The U-phase short
is detected before
running the servo
drive because
Only after this fault occurs for 5 seconds, you
can reset the servo drive.
If this fault is
persistent, send it back to the
manufacturer for repairing.
004Fh 2 0x2213H
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